Door-operating apparatus



N. SILVERSON.

DOOR OPERATING APPARATUS. APPLICATION FILED MAY 31,1921.

1,405,691. Patented Feb. 7, 1922.

' 2 SHEETS-SHEET w M M g? 7' ,0 a 2 I m I 311 vm'n f'o r maxi/Gk, 5 011/P5 N. SILVERSON.

DOOR OPERATING APPARATUS.

APPLICATION FILED MAY 31.1921.

Patented Feb. 7, 1922.

2 SHEETS-SHEET 2.

PATENT QFFICE.

NATHAN SILVEBSON, OF NEW YORK, N. Y.

DOOR-OPERATING- APPARATUS.

Application filed May 31,

To ((55 whom it may concern:

Be it known that I, NATHAN SILvnRsoN,

a citizen of the United States, and a resident of New York, in thecounty of New York and State of New York, have invented certain new anduseful Improvements in a Door- Operating Apparatus, of which thefollowing is a full, clear, and exact specification.

This invention relates to a class of devices adapted to be used inconjunction with doors.

My invention has for its object primarily to provide an apparatusdesigned to be employed on aV-door especially of a slidably movableclass adapted to be used at the entrance of the elevator of a buildingand elsewhere so that the mechanism may be manually operated for causingthe door to move to an open position as well as being relcasably heldopen if desired, besides being operable to cause the door to move to a,

' closed releasably locked position at the entrance, in. order to avoidthe necessity of the operator of the elevator to move the door to closedpositions, thereby overcoming the liability of accidents occurring bythe door being inadvertently left open following the departure of theelevator from a landing. The invention consists essentially of providingon a door slidably movable across the entrance especially of an elevatorand elsewhere of a locking bar with one or more catches on its endsadapted to releas ably engage one or more clips arranged on r the wallsof'the entrance. This locking bar is yieldingly held so that when thedoor is closed one of the catches will releasably engage'one of theolipsto lock the door, and

by pressing the other end of the bar downwardly the catch will bedisengaged to enable the door to be moved to an open position.Associated with the locking bar is a spring actuated mechanism forcausing the'door to be reversely moved to a closed position withoutrequiring it .to be manually closed, thereby avoiding the danger toperson incidentto the door being accidentally left open especially whenthe door'isemployed at theentrance to an elevator shaft. A furtherobject of the invention is to provide adoor of a simple, efiicient anddurable construction which may be madein any suitable size.

lVith these and other objects in view the invention will be hereinaftermore fully de- Specification of Letters Patent. Pate t d F b q 1922.

1921. Serial No. 473,726.

scribed with reference to the accompanying drawings forming a part ofthis specification in which similar characters of reference indicatecorresponding parts in all the views, and will then be pointed out inthe descrip tion.

parts of the door in a partly open position and also showing part of theentrance with the operating mechanism, the view illustrating in dottedlines the position of the mechanism when the door is open. 'Flg. 4 is anenlarged sectional View, partly inplet'ail, taken on the'line 4-4of'Fig'. 3, ant

Fig. 5 is an enlarged fragmentary view showing a reverse elevation,partly in do tail, of parts of the mechanism.

The apparatus has a frame 10 including 7 a plate 11 which may be of anysuitable shape and size, though the form of plate shown is substantiallyrectangular, and this .plate may be bolted or otherwise fastened in aposition crosswise'of one face of a door, as 12, adapted to be slidablymoved to open and closed positions'at the entrance 13 leading to anelevator in .a building or elsewhere. The door isv preferably carried onif a rod or bar, as 14, having its ends held to the walls 15, 16 belowthe top wall 17 of the entrance, and on the upper edge of the door aretwo spaced rollers, as 18 and 19, which are revolvable on the bar 14. Inthe entrance may also be a partition of'an appropriate form, as 19*, andon the side walls 15 and 16 of the entrance are provided suitable clips20 and 21 which are on alinement with each other "as well. as being inopposed relation to the ends of the plate 11. The clip 21may be of awell known form ofan apertured plate which is countersunken in the edgeof the side wall 16 of the entrance 13 atthe mouth of a recess, as 22,which is provided in this side wall, and the clip 20 is preferably inthe form of an inverted hook, as shown. 'On the lower edge of the,

other arm is disposed upwardly across and in spaced relation tov theplate. At the other end of the plate 11 is provided a bracket, as 24;,having" a vertically (LllZiPOSGd plate 25 secured to the plate 11 andthe plate 25 ma-y be of a length so that its upper end extends above theplate 11, and protruding from one of the edges of the plate 25 outwardlywith respect to the plate 11 is a flange 26 having a lengthwise slot 27.Part oi? the upperend of the flange 26 maybe bent rightangularly, as at28.

In the slot 27 of the flange 26 oil the plate 25 and between theL-shaped bar 23 and the plate 11 ot the frame 10 is a locking bar 29which is slidably movable longitudinally as well as being movable inupwardly and downwardly directions. On the ends of the locking bar '29are two catches 30 and 31, both of which may be somewhat of hook shapesprovided by notching the lower and upper edge portions of the bar sothat the catch or hook 31 is adapted. to releasably engage the clip orplate 21 and so that the catch or hook 30 is adapted to releasablyengage the clip or hook 20 of the entrance 13. The locking bar 29 isdisposed crosswise ot the door and lengthwise of the plate 11 of theframe 10. This locking bar is also arranged whereby the catch 31normally extends into the recess 22 of the wall 16 of the entrance 13when the door is closed and so that the catch 30-will releasably engagethe clip or hook 20'when the door is moved to open position. To the endpart'of the locking bar 29 adjacent to the catch 30 is held the lowerend of a spring '32 having its upper end held to the bent end 28 of theflange 26 of the bracket 24, and this spring is tensioned for serving toyieldingly hold this end of the locking bar in an upward direction-withits other end being downwardly disposed into engagement with the clip orplate 21 for releasably lockingthe door in closed position. I c

When the door is unlocked by manually moving its spring controlled enddownwardly for releasing the catch 31 from the clip 21 and with themanual moving of the door to an open position it is closed by two leverbars, as 33 and 34. One of the ends of these lever bars are pivotedtogether, at 35, and the bar 33 is proportionately longer than the bar34 so that this pivot is at the upper rear corner of the door. Thesecend end of the lever bar 34 ispivoted to a bracket 36 fixed to thepartition 19 above the central part of the upper edge of the door. Thelever bar 33 is disposed on a downwardi-ncline toward the catch 310i?the locking bar 29,, and the second end of this lever bar extends acrossthe forward portion as well asprotrudi-ng below the locking-bar. To thepart of the leverbar slightly above the looking bar 29 is pivoted oneend of a link or short bar 37 having on its other end a pivot bolt orpin 38 with a head 39 on its :tree end. ,The bolt 38 is inovablydisposed through a slot 40 extendinp; lengthwise oi the plate 11 of theframe 10, and the end oi the slot 40 in opposition to the catch of thelocking bar terminates with an opening 41 which is of greater diametertl'ian the width o-t the slot and slightly larger than the head 39 ofthe bolt The opening ll serves to permit the head of the bolt 33 to bepassed therethrough for being; slidably disposed in the slot 40 withoutremoving the plate 11 from the door, and this slot is oi: a length topermit the link 3'? and the lever bar 33 to move the required distanceacross the door toward the clip 20 when the door is opened. The slot 40is also of a length so that the opening 41 is arranged whereby the head39 of the bolt 38 will not be accidentally separated from the plate 11by passing through the opening;- when the door is closed. To part of thelever bar 33 spaced above th link 3? is held one end pf spiral spring-41-2 llhNlllQ; its other end held to one end of a threaded adjusting;rod or bolt, as l3, which-is screwed through a threaded hole in theupper part or" the flange 26 of the plate 25 of the frame 10. On the endof the rod is a nut a l adapted to be screwed into engagement with theflange 26 of the plate 25 for moving the rod as in a direction from thespring 42 for .varying the tension of this spring which is normallytensioned to cause the lever bars and 34 as well as the link 37 to movetoward the catch of the locking bar 29. 1th the unlocking of the catch31 of the bar 29 and with the, movement of the door I to an openposition, asabove explained. the catch 30 of the locking bar 29 willengage the clip 20,- as shown in dotted lines, Fig.3, it it is desiredthat the door he held in an open position. The lever bar 33 will then bein the position also shown by the dotted lines in Fig. 3, and the spring42 will be ice tensioned by being extensibly expanded so that when thelocking bar 29 ,is released from the clip 20 the spring will cause reverse movements oi the lever bars 33, 34L and link 37 for causing thedoor to be moved to a closed position as well as'causing the catch 31 tolock with the clip 21 without requiring the door to be manually closed.The lockingbar 29 also of a length so that when the door is moved toopen positions the catch 31 of the locking bar will be moved from aprotruding position beyond the edge f the door .to prevent the clothesota person passing through the entrance irom being caught inthe catch.

In order to regulate theforce ofmovement of the door when beingrclosodyabumper elen'ient as 4:5, isprovided; This bumper thereof. a a

element may be in. the form of a commonly .used type of pneumatic pumphaving a cylinder, as 46, with one of its ends being held, at 47, to thedoor under the catch 31 of the locking bar 29, and in the cylinder is areciprocable piston 48 provided on one end of a rod 49, the other end ofwhich extends 1 beyond the cylinder. The second end of the rod 49 ispivoted, at 50, to the lower, end of the lever bar 33 so when the doorisswung open the leverbar 33 will cause the rod and pifstonto moveoutwardly of the cylinder 46. ith the closing of the door, as explained,

the closing movement of the door,this being accomplished by regulatingthe resisting action of the bumper element 45 according to the tensionof the spring 42.

In the foregoing description, I haveembodied the preferred form of myinvention, but I do not wish to be understood as limiting myselfthereto, as I am aware that modifications maybe made'therein withoutdepartingfrom-the principle or sacrificing any of theadvantages of thisinvention, therefore, Ireserve to myself the right to make such changesas fairly fall within the scope Having thus described my invention, Iclaim as newand desire to secure by Letters Patent 1. The combinationwith a door slidably movable to open and closed positions across anentrance and the side walls of the entrance having alined clips, of aframe on the door, an upwardly and downwardly movable locking her on theframe, catches on the ends of the locking bar, one adapted to releasablyengage one of the clips when the door is closed and the other catchbeing adapted-to releasably engage the second clip when the door isopen, a spring yieldingly holding one end of the locking bar upwardly sothat the catch at the other end of the bar and the cooperating clip onthe entrance will be in normal engagement when the door is closed toallow the upwardly disposed end of the bar to be pressed downwardly forreleasing the engaged catch and clip, and mechanism associated with thelocking bar, operable for causing the door to be moved to closedposition following the manual open .when the door is open, a springyieldingly holding one end of the locking bar upwardly so that .thecatch at the other end of the bar and the cooperating clip on theentrance will be in normal engagement when the door is closed to allowtheupwardly disposed end of the bar to be pressed downwardly forreleasing the engaged catch and clip, mechanism associated with thelocking bar,-operable for causing the door to,be moved to closedposition following the manual opening of the door, and a bumper elementon the .dooradapted to be actuated by the mechanism for cushioningthe'door; during its closing movements. 1 V

3. The combination with a door slidably movable to open and closedpositions across an entrance and one of the side walls of-the entrancehaving "a clip, of a frame on the door, an upwardly and downwardlymovable locking bar on the frame, a catch on one of the ends ofthelocking bar, adapted to rel'easab'ly engage the: clip when the dooris closed, a spring yieldingly holding one end 'of the locking upwardlyso that the catch at the other end of the bar and the cooperating clipon the entrance will be in normal engagement when the door is closed toallow the upwardly disposed end of the bar to be pressed downwardly forreleasing the engaged catch and clip, two lever bars f having'one oftheir ends pivoted together and thesecond end'of one of the leverbarsbeing pivoted to'the top wall of the entrance, while the second end ofthe other lever bar is pivotally held-to "the lockingbar, and a springheld vto the frame of the door and held to one of the lever bars foryieldingly forcing the door to move to a closed position when open.

4. The combination with a door slidably 'movable to open and closedpositions across an entrance and one of the side walls of the entrancehaving a clip,of a frame on the door, an upwardly and downwardly movablelocking baron the frame, a catch on one of the ends of the locking bar,adapted to releasably engage one of the clips when the door is closed, aspring yieldingly holding one end of the locking bar upwardly so thatthat catch at the other end of the bar and the cooperating clip on theentrance will be in normal engagement when the, door is closed to allowthe upwardly disposed end of the bar to be pressed downwardly forreleasing the engage-d catch and clip, two lever bars having one oftheir ends pivoted together and the second end of one of the lever barsbeing pivoted to the top wall of the entrance, while the second end ofthe other lever bar is pivotally held to the locking bar, a spring heldto the frame of the door and held to one of the lever bars foryieldingly forcing the door to move to a closed'position when open, adevice associated with the spring,

adjustable for varying the tension of the spring to regulate the'lt'orceof movement of the door, and a bumper element on the door adapted to beactuated by the lever bars for cushioning the door during its closingmovements. 7 v

5. The. combination with a door slid-ably movable to open vand closedpositions across an entrance and the side walls of the en-' trancehaving alined clips, of a frame on the door, an upwardly anddownwardlymovable looking bar on the frame, catches on the ends of thelocking bar, one adapted to rel'easably engage one of the clips when thedooris closed and the other catch being adapted to releasably engage thesecond clip when the door is open, a spring yieldingly holding one endof the locking bar upwardly so that the catch at the other end of thebar and the cooperating clip on the entrance will be in normalengagement when the door is I closed to allow the upwardly disposed endof the bar to be pressed downwardly for releasin the engaged catch andclip, two

lever bars having one of their ends pivoted together and the second endof one of the lever bars being pivoted to the top wall of the entrance,while the second end of the other lever bar 'ispivotally held to thelocking bar, and, a spring held to the frame of the door and held to oneof the lever bars for yieldingly forcing the door to move to a closedposition when open. 7 6. The combination with a door slidably movable toopen and closed positions across an entrance and the side walls of theentrance having alined clips, of a frame on the door, an upwardly anddownwardly movable locking bar on the frame; catches-on the ends of thelocking bar, one adapted to releasably engage one or the clips when thedoor is closed and the other catch being adapted to releasably engagethe second clip when the door is open, a spring yieldingly holding oneend of the locking bar upwardly so that the catch at the other end ofthe bar and the cooperating clip on the entrance Wlll be 1n normalengagement when the door is closed to allow the upwardly disposed end ofthe bar to be pressed downwardly for releasing the engagedcatch andvclip, two lever bars having one of their ends pivoted together and thesecond end of one of the lever barsbeing pivoted to the top -wall of theentrance, while the second end of the lever bar is pivotally held tot-helock- \Vitnesses:

B. EMRICH, J. FREDERICK CRYER.

NATHAN sILvEasoN.

